CVE-2003-0450

CVE-2003-0450 is a high-severity vulnerability in Cistron Radius Daemon with a CVSS 2.0 base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Description

Cistron RADIUS daemon (radiusd-cistron) 1.6.6 and earlier allows remote attackers to cause a denial of service and possibly execute arbitrary code via a large value in an NAS-Port attribute, which is interpreted as a negative number and causes a buffer overflow.

Frequently asked questions

What is CVE-2003-0450?
Cistron RADIUS daemon (radiusd-cistron) 1.6.6 and earlier allows remote attackers to cause a denial of service and possibly execute arbitrary code via a large value in an NAS-Port attribute, which is interpreted as a negative number and causes a buffer overflow.
How severe is CVE-2003-0450?
CVE-2003-0450 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2003-0450 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2003-0450?
CVE-2003-0450 affects Cistron Radius Daemon. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2003-0450?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2003-0450 published?
CVE-2003-0450 was published on 2003-08-07 and last updated on 2026-06-16.

References

Affected products (1)